The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of heat exchangers for aircraft, classified under the NAICS code 336413. The requirement includes unique identification and valuation of the items, with a delivery schedule of 180 days from the contract award, emphasizing the need for early and incremental deliveries. These heat exchangers are critical components for aircraft air conditioning, heating, and pressurizing systems, ensuring operational efficiency and safety. Interested vendors should direct inquiries to Allen Neyland via email at ALLEN.NEYLAND@NAVY.MIL, and further details regarding the solicitation can be obtained through the provided contact information.